泸定大渡河桥重力锚碇基础形式研究  

Research on Gravity Anchorage Foundation of Dadu River Bridge in Luding

作　　者：周霆 陶齐宇 李则均 ZHOU Ting;TAO Qiyu;LI Zejun(Sichuan Highway Planning Survey Design and Research Institute Ltd.,Chengdu,Sichuan 610041,China)

机构地区：[1]四川省公路规划勘察设计研究院有限公司,四川成都610041

出　　处：《中外公路》2024年第1期155-160,共6页Journal of China & Foreign Highway

基　　金：四川省公路规划勘察设计研究院有限公司科研项目(编号:2018⁃YL⁃01)。

摘　　要：第四纪冰期形成的冰碛土在中国西部广泛分布,其力学性质好,覆盖深厚。该文以泸定大渡河桥为依托,通过理论分析和数值模拟研究了将冰碛土作为重力锚基础的地基持力层时,不同基础形式对锚碇稳定性的影响,得出带齿坎的斜向扩大基础是一种既受力良好又经济的基础形式,可为西部建设类似工程提供借鉴。Moraine soils formed during the Quaternary glacial period are widely distributed in the west of China,exhibiting good mechanical properties and deep overburden.This paper studied the Dadu River bridge in Luding and investigated the influence of various foundation forms on anchorage stability in the case of considering moraine soils as the soil supporting layer of gravity anchorage foundation through theoretical analysis and numerical simulation.The findings suggest that a slant expanded foundation with a notched sill demonstrates good force-bearing capability and is cost-effective.These results can provide a reference for similar construction projects in the west of China.

关 键 词：悬索桥 重力锚 冰碛土 稳定性 齿坎效应 

分 类 号：U448.25[建筑科学—桥梁与隧道工程] U442.54[交通运输工程—道路与铁道工程]